B501
B501 Page 4 840D/828D SINUMERIK Operate
Notes
Section 3
Programming of the technological data
Before every technological working step in a CNC-Program the respective
tool must be selected by means of the addresses “T” and “D”.
The address “T” is followed by the name of the tool, which may be stated
either with numbers or letters. (Here only the variant using numbers will be
dealt with.)
All applicable tool data (e.g. tool type, length, radius, etc.) are activated in
the program with the address “D”.
Here a complete set of data “D” is referred to as "Cutting edge".
Several cutting edge numbers (D1 … D9) can be generated for each tool.
Programming example: Explanation:
N10 T17 ; Drill Block 10, call-up of tool 17,
Commentary to the tool
N20 M6 Tool change,
N30 … D1 The cutting edge D... must be activated
in the block with the first departure com--
mand.
After the call-up of the tool, follows the selection of optimum cutting values
with the addresses “F” and “S”.
The feed rate with the address “F” can be entered either as feed per min v
f
(in mm/min) or as feed per revolution f (in mm).
Default status of the machines when they are powered up are as follows:
Milling machines with feed rate v
f
in mm/min Code G94
Turning machines with feed per revolution f in mm Code G95
Programming example 1: Explanation:
N10 T20 ; Endmill
N20 M6
N30 G94 F200 S1000 M3 D1 v
f
= 200 m/min, n = 1000 min
-1
N40 ….
Programming example 2: Explanation:
N10 T2; Turning tool, finishing
N20 G96 F0.1 S200 M4 D1 f = 0,1 mm, v
c
= 200 m/min
N30 ….
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